diff options
Diffstat (limited to 'zephyr/program/npcx_evb/npcx9/fan.dts')
-rw-r--r-- | zephyr/program/npcx_evb/npcx9/fan.dts | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/zephyr/program/npcx_evb/npcx9/fan.dts b/zephyr/program/npcx_evb/npcx9/fan.dts new file mode 100644 index 0000000000..dc4debdcb9 --- /dev/null +++ b/zephyr/program/npcx_evb/npcx9/fan.dts @@ -0,0 +1,39 @@ +/* Copyright 2021 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/ { + fans { + compatible = "cros-ec,fans"; + + fan_0 { + pwms = <&pwm0 0 PWM_KHZ(25) PWM_POLARITY_NORMAL>; + rpm_min = <1000>; + rpm_start = <1000>; + rpm_max = <5200>; + tach = <&tach1>; + pgood_gpio = <&gpio_pgood_fan>; + }; + }; +}; + +/* Tachometer for fan speed measurement */ +&tach1 { + status = "okay"; + pinctrl-0 = <&ta1_1_in_gp40>; + pinctrl-names = "default"; + port = <NPCX_TACH_PORT_A>; /* port-A is selected */ + sample-clk = <NPCX_TACH_FREQ_LFCLK>; /* Use LFCLK as sampling clock */ + pulses-per-round = <2>; /* number of pulses per round of encoder */ +}; + +&pwm0_gpc3 { + drive-open-drain; +}; + +&pwm0 { + status = "okay"; + pinctrl-0 = <&pwm0_gpc3>; + pinctrl-names = "default"; +}; |